/*Using LVGL with Arduino requires some extra steps:
 * Be sure to read the docs here: https://docs.lvgl.io/master/get-started/platforms/arduino.html  */
#include <Arduino.h>
#include <FT6336U.h>
#include <lvgl.h>
//#include <../lv_examples/lv_demo.h>
//#include <../lvgl/demos/lv_demos.h>
#include <TFT_eSPI.h>
#include <SPI.h>

#include <freertos/FreeRTOS.h>  
#include <freertos/task.h>


#if CONFIG_FREERTOS_UNICORE
#define ARDUINO_RUNNING_CORE 0
#else
#define ARDUINO_RUNNING_CORE 1
#endif

FT6336U touch_6336(4,41,17,&Wire);//Wire是0号总线，引脚号根据实际连线修改  6789……均被内部占用
 
/*------------ 触摸引脚 ------------*/
//#define I2C_SDA 4//21//4
//#define I2C_SCL 41//15
//#define RST_N_PIN 5//37//5
//#define INT_N_PIN 17//42//17
 
/*  SDAPin  21//40
int SCLPin  41
int INTPin  42
#define TFT_MISO 12//19 // (leave TFT SDO disconnected if other SPI devices share MISO)
#define TFT_MOSI 13 //23  VSPI要改为HSPI
#define TFT_SCLK 14 //18
#define TFT_CS   15//40// 15  // Chip select control pin
#define TFT_DC   18// 39  // Data Command control pin  2
#define TFT_RST   38  // Reset pin (could connect to RST pin)  4
*/

/*To use the built-in examples and demos of LVGL uncomment the includes below respectively.
 *You also need to copy `lvgl/examples` to `lvgl/src/examples`. Similarly for the demos `lvgl/demos` to `lvgl/src/demos`.*/
//#include <demos/lv_demos.h>
//#include <examples/lv_examples.h>

/*Change to your screen resolution*/
static const uint16_t screenWidth  = 480;
static const uint16_t screenHeight = 320;

static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * 10 ];

TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */

//FT6336U ft6336u(I2C_SDA, I2C_SCL, RST_N_PIN, INT_N_PIN); 
FT6336U_TouchPointType tp;

#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char * buf)
{
    Serial.printf(buf);
    Serial.flush();
}
#endif

/* Display flushing */
void my_disp_flush( lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p )
{
    uint32_t w = ( area->x2 - area->x1 + 1 );
    uint32_t h = ( area->y2 - area->y1 + 1 );

    tft.startWrite();
    tft.setAddrWindow( area->x1, area->y1, w, h );
    tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
    tft.endWrite();

    lv_disp_flush_ready( disp );
}

/*Read the touchpad
void my_touchpad_read( lv_indev_drv_t * indev_driver, lv_indev_data_t * data )
{
    uint16_t touchX, touchY;

    bool touched = tft.getTouch( &touchX, &touchY, 600 );

    if( !touched )
    {
        data->state = LV_INDEV_STATE_REL;
    }
    else
    {
        data->state = LV_INDEV_STATE_PR;

        //Set the coordinates
        data->point.x = touchX;
        data->point.y = touchY;

        Serial.print( "Data x " );
        Serial.println( touchX );

        Serial.print( "Data y " );
        Serial.println( touchY );
    }
}
*/

void my_touchpad_read( lv_indev_drv_t * indev_drv, lv_indev_data_t * data )
{
  if (touch_6336.available())
  {
    data->state = LV_INDEV_STATE_PR;
    data->point.x = touch_6336.touchPoint.tp[0].x;
    data->point.y = touch_6336.touchPoint.tp[0].y;
    printf("Touched");
  }
  else
  {
    data->state = LV_INDEV_STATE_REL;
  }
}


void setup()
{
    Serial.begin( 115200 ); /* prepare for possible serial debug */
    delay(1);
   /*Initialize the (dummy) input device driver*/
  static lv_indev_drv_t indev_drv;
  lv_indev_drv_init(&indev_drv);
  indev_drv.type = LV_INDEV_TYPE_POINTER;
  indev_drv.read_cb = my_touchpad_read;
  lv_indev_drv_register(&indev_drv);


    String LVGL_Arduino = "LVGL\n";
    LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();

    Serial.println( LVGL_Arduino );
    //Serial.println( "LVGL_Started" );

    lv_init();
    tft.begin();          /* TFT init */
    touch_6336.begin();
    tft.setRotation( 3 ); /* Landscape orientation, flipped */

    /*Set the touchscreen calibration data,
     the actual data for your display can be acquired using
     the Generic -> Touch_calibrate example from the TFT_eSPI library*/
    //uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
    //tft.setTouch( calData );

    lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * 10 );

    /*Initialize the display*/
    static lv_disp_drv_t disp_drv;
    lv_disp_drv_init( &disp_drv );
    /*Change the following line to your display resolution*/
    disp_drv.hor_res = screenWidth;
    disp_drv.ver_res = screenHeight;
    disp_drv.flush_cb = my_disp_flush;
    disp_drv.draw_buf = &draw_buf;
    lv_disp_drv_register( &disp_drv );

    lv_obj_t *label = lv_label_create( lv_scr_act() );
    lv_label_set_text( label, LVGL_Arduino.c_str() );
    lv_obj_align( label, LV_ALIGN_CENTER, 0, 0 );
    lv_obj_t* btn = lv_btn_create(lv_scr_act()); 
	lv_obj_set_pos(btn, 100, 100);
	lv_obj_set_size(btn, 120, 50);
	lv_obj_t* HVS = lv_label_create(btn);
	lv_label_set_text(HVS, "Button");
	lv_obj_center(label);
    Serial.println( "Setup done" );
}

void loop()
{ 
   lv_tick_inc(1);
    lv_timer_handler(); /* let the GUI do its work */

    Serial.println( "RoundEnd" );
    delay(1);
}
